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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 06-19-2013, 08:27 AM
rufus2004 rufus2004 is offline
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328 Engine Temperature

My 1997 328ic has 147K and a manual transmission. The radiator, thermostat, fan clutch, and coolant have all been replaced within the last 1k, I also run Water Wetter. I live in the desert and lately the temps have been over 100. The temp gauge usually runs right at the middle, but lately after about 10 miles on the freeway, it creeps up to the 3/4 mark for a couple of minutes and then drops back to 1/2. Due to the outside temp, I shift easy and into 5th quickly and try to cruise at about 2500 rpm, I also have not been running the A/C. Is this a normal situation for this car?, the manual seems to indicate not to be alarmed, but I want to confirm it. Thanks for any input.
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  #2  
Old 06-19-2013, 08:54 AM
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ZeGerman ZeGerman is offline
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This is absolutely NOT normal, and needs to be addressed immediately. Even in the desert, the temp gauge should never go above the halfway / 12 o'clock mark. If it does, you have problems. Also, be aware that the temp gauge in these cars unfortunately has a rather large buffer built into it, which means that by the time your temp needle goes above halfway, the actual temp of the coolant is far hotter than what the gauge is indicating, and may actually be so hot that you risk damaging the engine even if the needle hasn't yet gotten to the red.

In all likelihood, you didn't get all the air out of the cooling system when you replaced those parts. Raise the front of the car on jackstands (or park on a hill) and go through the bleeding process a few more times.
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Last edited by ZeGerman; 06-19-2013 at 08:55 AM.
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  #3  
Old 06-19-2013, 09:32 AM
hnaz hnaz is offline
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Quote:
Originally Posted by ZeGerman View Post
This is absolutely NOT normal, and needs to be addressed immediately. Even in the desert, the temp gauge should never go above the halfway / 12 o'clock mark. If it does, you have problems. Also, be aware that the temp gauge in these cars unfortunately has a rather large buffer built into it, which means that by the time your temp needle goes above halfway, the actual temp of the coolant is far hotter than what the gauge is indicating, and may actually be so hot that you risk damaging the engine even if the needle hasn't yet gotten to the red.

In all likelihood, you didn't get all the air out of the cooling system when you replaced those parts. Raise the front of the car on jackstands (or park on a hill) and go through the bleeding process a few more times.
Or just drive it for a few until it gets to normal operating temperature and just bleed until no more bubbles come out. Once you get constant coolant flow every time you loosen the nut, you're good to go. Also check the heat coming out of the vents when you turn on the heater. If it is blowing hot, then warm, then hot, then warm again, you got a bubble.

And so long as the needle doesn't STAY in the red, you're fine. Your needle should be bouncing back and forth when there is an air pocket.

Also, I'd recommend feeling the hoses as well. If they are ROCK hard, you got a big air pocket in there.
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Old 06-19-2013, 09:38 AM
Burning2nd Burning2nd is offline
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T stat or water pump

No point in trying to bleed it any further at this point the air has already moved to the tank ... In the morning the car will be cool check and see if the antifreeze is low if it is top off and that was your problem if not and it is intact at its normal level . Then stat and pump
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Last edited by Burning2nd; 06-19-2013 at 09:39 AM.
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  #5  
Old 06-20-2013, 02:42 AM
Burning2nd Burning2nd is offline
Under the lift arms
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It probably wasn't bleed completely

but now 10 miles later, It certainly is
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Old 06-20-2013, 03:35 AM
hnaz hnaz is offline
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It probably wasn't bleed completely

but now 10 miles later, It certainly is
I'm reading an echo...
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  #7  
Old 06-20-2013, 06:09 AM
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southpark11235 southpark11235 is offline
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I'm reading an echo...
Cool Cool Cool. echo echo echo.
Hey, stop coping me. Hey, stop coping me. Hey, stop coping me. I mean it. I mean it. I mean it.
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  #8  
Old 06-20-2013, 09:09 AM
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ZeGerman ZeGerman is offline
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Quote:
Originally Posted by ZeGerman View Post
In all likelihood, you didn't get all the air out of the cooling system....
Quote:
Originally Posted by Burning2nd View Post
No point in trying to bleed it any further at this point the air has already moved to the tank ...
Quote:
Originally Posted by Burning2nd View Post
It probably wasn't bleed completely
The cooling systems in our E36s do not self-bleed, so even if trapped air has risen to the tank, it will still need to be released, which is why I initially suggested bleeding the system again.
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  #9  
Old 06-20-2013, 09:45 AM
Burning2nd Burning2nd is offline
Under the lift arms
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Yeah what I was saying , simple

After the car cooled down it sucked in the fluid , and the tank would have been low the next morning ...

But you all already know that
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